What is gravity?
In OPH, gravity is the way the geometry of a network of observers bends to the energy it carries. Observers compare records with neighbors and repair disagreements, and a region that has finished repairing is settled. The proposal is that a settled small region holds the most entropy its boundary allows, counting its contents' share plus a quarter of its boundary area in Planck units. Put energy inside at fixed volume and the contents gain entropy, so the boundary area must shrink by the same amount, and only the shape can give. Worked through for a small ball, that balance yields Einstein's equation, with the factor 8π included and nothing fitted. The step is conditional, and only its finite algebra is checked by machine. Among the premises still unproved are that boundary counts are physical area, that the ball's internal clock sets a physical temperature and that settling is the physical entropy maximum, all inside the repair process the observers run. The value of Newton's constant is still open.
Also in Chapter 24: Why Does a Region's Memory Scale With Its Surface?.
This answer comes from OPH, Observer Patch Holography. OPH is a rigorous, consistent and complete description of the unified, self-creating computational Universe we inhabit. Its consistency is machine-checked: the fixed point at its core is constructed explicitly, and a theory with a model contains no contradiction.
To understand OPH and check every step yourself, start with the free book Reverse Engineering Reality. It builds the theory from the ground up, and the OPH Notebook answers your questions while you read.
read the free bookask the notebookor ask sage:read chapter 25: Why Does Gravity Look Like Geometry?watch a universe make its own particles